《2025年黄冈小状元同步计算天天练六年级数学下册北师大版》

用你喜欢的方法计算下列各题。
$17\%×5.8 + 0.17×4.2$          $3.12×56\% - 0.56×12\%$
$80\%×6.4 + 4.6×0.8 - 80\%$        $3500×32\% - 312×32\% - 188×0.32$
$1.26×0.25 + 5.37÷4 + 3.37×25\%$       $5.72÷80\% + 125\%×5.28 - 1.25$
$6500×35\% + 6500×15\% + 650×5$         $4×32\%×1.25×50÷20\%$

答案： 　17%×5.8+0.17×4.2
=0.17×(5.8+4.2)
=0.17×10
=1.7
　3.12×56%−0.56×12%
=3.12×0.56−0.56×0.12
=(3.12−0.12)×0.56
=3×0.56
=1.68
　80%×6.4+4.6×0.8−80%
=0.8×6.4+4.6×0.8−0.8
=0.8×(6.4+4.6−1)
=0.8×10
=8
3500×32%−312×32%−188×0.32
=3500×0.32−312×0.32−188×0.32
=(3500−312−188)×0.32 =3000×0.32
=960
　1.26×0.25+5.37÷4+3.37×25%
=1.26×0.25+5.37×0.25+3.37×0.25
=(1.26+5.37+3.37)×0.25 =10×0.25
=2.5
　5.72÷80%+125%×5.28−1.25
=5.72÷$\frac{4}{5}$+$\frac{5}{4}$×5.28−$\frac{5}{4}$
=5.72×$\frac{5}{4}$+$\frac{5}{4}$×5.28−$\frac{5}{4}$
=(5.72+5.28−1)×$\frac{5}{4}$
=10×$\frac{5}{4}$
$\frac{25}{2}$(或12.5)
　6500×35%+6500×15%+650×5
=6500×0.35+6500×0.15+6500×0.5
=6500×(0.35+0.15+0.5)
=6500×1
=6500
　4×32%×1.25×50÷20%=4×$\frac{8}{25}$×$\frac{5}{4}$×50×5
=4×$\frac{2}{5}$×50×5
=4×20×5
=400